tests/kernel/common: Add an explicit test using the minimal C library

When the default C library is switched to picolibc, we need some tests to
make sure things still build with the minimal C library.

Signed-off-by: Keith Packard <[email protected]>

Author: keith-packard

tests/kernel/common/testcase.yaml

@@ -22,6 +22,11 @@ tests:
       - native_posix
     extra_configs:
       - CONFIG_MISRA_SANE=y
+  kernel.common.minimallibc:
+    filter: CONFIG_MINIMAL_LIBC_SUPPORTED
+    tags: libc
+    extra_configs:
+      - CONFIG_MINIMAL_LIBC=y
   kernel.common.nano32:
     filter: not CONFIG_KERNEL_COHERENCE
     extra_configs: